cURL with Rails

app/controllers/home_controller.rb

@@ -0,0 +1,14 @@
+class HomeController < ApplicationController
+  protect_from_forgery with: :null_session
+
+  # curl -X GET http://localhost:3000/index\?foo\=yaro
+  def index
+    render plain: "hello world #{request.params[:foo]}"
+  end
+
+  # curl -X POST -d 'name=shm' http://localhost:3000/post_example
+  def post_example
+    # render plain: "hello world #{request.params[:foo]}"
+    render plain: request.body.read
+  end
+end

app/controllers/posts_controller.rb

@@ -0,0 +1,76 @@
+class PostsController < ApplicationController
+  protect_from_forgery with: :null_session
+  before_action :set_post, only: %i[ show edit update destroy ]
+
+  # curl -X GET http://localhost:3000/posts.json
+  # GET /posts or /posts.json
+  def index
+    @posts = Post.all
+  end
+
+  # curl -X GET http://localhost:3000/posts/2.json
+  # GET /posts/1 or /posts/1.json
+  def show
+  end
+
+  # GET /posts/new
+  def new
+    @post = Post.new
+  end
+
+  # GET /posts/1/edit
+  def edit
+  end
+
+  # curl -X POST -H "Content-Type: application/json" -d '{"post": {"title": "first post", "published": "false"}}' http://localhost:3000/posts.json
+  # POST /posts or /posts.json
+  def create
+    @post = Post.new(post_params)
+
+    respond_to do |format|
+      if @post.save
+        format.html { redirect_to post_url(@post), notice: "Post was successfully created." }
+        format.json { render :show, status: :created, location: @post }
+      else
+        format.html { render :new, status: :unprocessable_entity }
+        format.json { render json: @post.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # curl -X PATCH -H "Content-Type: application/json" -d '{"post": {"title": "UPDATED post", "published": "true"}}' http://localhost:3000/posts/1.json
+  # PATCH/PUT /posts/1 or /posts/1.json
+  def update
+    respond_to do |format|
+      if @post.update(post_params)
+        format.html { redirect_to post_url(@post), notice: "Post was successfully updated." }
+        format.json { render :show, status: :ok, location: @post }
+      else
+        format.html { render :edit, status: :unprocessable_entity }
+        format.json { render json: @post.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # curl -X DELETE -H "Content-Type: application/json" http://localhost:3000/posts/1.json
+  # DELETE /posts/1 or /posts/1.json
+  def destroy
+    @post.destroy
+
+    respond_to do |format|
+      format.html { redirect_to posts_url, notice: "Post was successfully destroyed." }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_post
+      @post = Post.find(params[:id])
+    end
+
+    # Only allow a list of trusted parameters through.
+    def post_params
+      params.require(:post).permit(:title, :published)
+    end
+end

app/models/post.rb

@@ -0,0 +1,3 @@
+class Post < ApplicationRecord
+  broadcasts_to ->(post) { :posts_list }
+end

app/views/posts/_form.html.erb

@@ -0,0 +1,27 @@
+<%= form_with(model: post) do |form| %>
+  <% if post.errors.any? %>
+    <div style="color: red">
+      <h2><%= pluralize(post.errors.count, "error") %> prohibited this post from being saved:</h2>
+
+      <ul>
+        <% post.errors.each do |error| %>
+          <li><%= error.full_message %></li>
+        <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div>
+    <%= form.label :title, style: "display: block" %>
+    <%= form.text_field :title %>
+  </div>
+
+  <div>
+    <%= form.label :published, style: "display: block" %>
+    <%= form.check_box :published %>
+  </div>
+
+  <div>
+    <%= form.submit %>
+  </div>
+<% end %>

app/views/posts/_post.html.erb

@@ -0,0 +1,12 @@
+<div id="<%= dom_id post %>">
+  <p>
+    <strong>Title:</strong>
+    <%= post.title %>
+  </p>
+
+  <p>
+    <strong>Published:</strong>
+    <%= post.published %>
+  </p>
+
+</div>

app/views/posts/_post.json.jbuilder

@@ -0,0 +1,2 @@
+json.extract! post, :id, :title, :published, :created_at, :updated_at
+json.url post_url(post, format: :json)

app/views/posts/edit.html.erb

@@ -0,0 +1,10 @@
+<h1>Editing post</h1>
+
+<%= render "form", post: @post %>
+
+<br>
+
+<div>
+  <%= link_to "Show this post", @post %> |
+  <%= link_to "Back to posts", posts_path %>
+</div>

app/views/posts/index.html.erb

@@ -0,0 +1,16 @@
+<p style="color: green"><%= notice %></p>
+
+<h1>Posts</h1>
+
+<%= turbo_stream_from :posts_list %>
+
+<div id="posts">
+  <% @posts.each do |post| %>
+    <%= render post %>
+    <p>
+      <%= link_to "Show this post", post %>
+    </p>
+  <% end %>
+</div>
+
+<%= link_to "New post", new_post_path %>

app/views/posts/index.json.jbuilder

@@ -0,0 +1 @@
+json.array! @posts, partial: "posts/post", as: :post

app/views/posts/new.html.erb

@@ -0,0 +1,9 @@
+<h1>New post</h1>
+
+<%= render "form", post: @post %>
+
+<br>
+
+<div>
+  <%= link_to "Back to posts", posts_path %>
+</div>

app/views/posts/show.html.erb

@@ -0,0 +1,10 @@
+<p style="color: green"><%= notice %></p>
+
+<%= render @post %>
+
+<div>
+  <%= link_to "Edit this post", edit_post_path(@post) %> |
+  <%= link_to "Back to posts", posts_path %>
+
+  <%= button_to "Destroy this post", @post, method: :delete %>
+</div>

app/views/posts/show.json.jbuilder

@@ -0,0 +1 @@
+json.partial! "posts/post", post: @post

config/routes.rb

@@ -1,4 +1,7 @@
 Rails.application.routes.draw do
+  resources :posts
+  get 'index', to: 'home#index'
+  post 'post_example', to: 'home#post_example'
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
 
   # Defines the root path route ("/")

db/migrate/20230416135919_create_posts.rb

@@ -0,0 +1,10 @@
+class CreatePosts < ActiveRecord::Migration[7.0]
+  def change
+    create_table :posts do |t|
+      t.string :title
+      t.boolean :published
+
+      t.timestamps
+    end
+  end
+end